Nonlinear-Fourier-Transform-Based Dynamic Analyses on the Multiple Cavity Solitons in Kerr Microresonators

The Kerr microresonators have aroused widespread interests for their ultrahigh integration, compatible fabrication and ultralow energy consumption. Similar to the traditional mode-locked fiber lasers, microresontors can sustain generation of dissipative solitons called cavity relying on double balance gain loss as well nonlinearity dispersion. state multiple is common in microresonator with anomalous In particular, an ideal named soliton crystals obtained when a equidistant arrangement. And recent experiments successfullly observed microresonators. To intuitively reveal formation evolution dynamics get insight into underlying physical mechanisms crystals, we applied nonlinear Fourier transform project these states discrete spectrum. spectra single different modulated background waves been displayed, which help distinguish optical components. Then, spectrum normal shows typical intracavity field. effects power enhancement, whose spectral intensity several times that state. Comparing solitons, inside interact each other by background. Our results suggest powerful technique characterize microresonator, provides new perspective understand interactions solitons.